I agree that perfect trousers are a tough challenge...although being a frock girl myself it's not my biggest worry.
Until recently, knee-length or midi dresses were hard to find (everything was super short!!) but that seems to be shifting some. Yay!
I'm always on the lookout for unique and interesting tops/blouses. Classic tops are everywhere, but unique tops that are also flattering and versatile are my holy grail! Anthropologie and Sundance have been the source of my long-standing favorites over the years.
I am always looking for attractive/sexy bras and panties that are also practical and comfortable...harder to find than one might think! My current favorite brand is Anita/Rosa Faia.